Woodworking-tool.



R. S. N. BURDICK.

WOODWORKING TOOL.

APPLICATION FILED SEPT. 5, 1911.

1,043,902, Patented Nov.12,1912.

PH co.,wAsHlNuTnN D C UNITE@ STATES PATENT @FFIQE RALPH STONS NELSONBURDICK, OF BISHOP, CALIFORNIA.

WOODWORKINGr-'IOOL Application filed September 5, 1911.

To all whom it may concern:

Be it known that I, RALPH S. N. Brunnen, a citizen ot' the UnitedStates, residing at Bishop, in the county of Inyo and State ot'California, have invented certain new and useful Improvements inWoodworkingrlools, of which the following is a specification.

My invention relates to improvements in scribing or of an improvedattachment for try or other squares which will serve in connection withsaid square as a scribing, scratching, or marking device, and which maybe also attached to any object similar in shape to the blade of asquare, to provide a marking or scratching device thereon.

A. further object of my invention is the provision of an improved clipadapted to he secured in adjusted position upon the blade of a square,or similarly shaped tool which shall bear means for marking the articlealong which the square or tool is moved.

@ther objects and advantages of my iniproved device will be readilyunderstood from the following description taken in connection with theaccompanying drawings, and it will also be understood that I may makeany modiiications in the construction shown and described wit-hin thescope ot the claims without departing from the spirit of the invention.

Figure 1 represents a side elevation of a try square with my improveddevice applied thereto. Fig. 2 represents a top plan view thereof. Fig.3 represents a plan view of my invention in open position. Fig.' 4represents a sectional view on the line 4 4 of Fig. 1. Fig. 5 representsa similar view showing the use of the device with a pencil, and Fig. 6represents a detailed view of the locking screw.

In the drawings, the numeral 1 designates the handle of the squarehaving the blade 2 bearing the graduations 3 designated by the customarynumerals 4.

Mounted upon the blade 2 of the square is my improved device comprisingthe plate 5 having the central curved ear 6 formeel at one end and theplate 7 having the curved ears 8 disposed on each side of the ear 6, apivot pin 9 passing through and pivotally connecting said ears, thedownward curving of the ears causing the plates to be spaced apart toreadily receive the square blade 2 therebetween.

To secure the device in position upon the Specification of LettersPatent.

Patented Nov. l2, MM2.

Serial No. 647,594.

blade of the square, I form in the tree end of the plate 5 the squaredopening 10 and [itting in the said opening is the head 12 ot the clampscrew 13, said screw having the enlarge squared portion 14 for fittingin the hole 10, while the end of the screw projects through the opening15 in the end of the plate 7 and has engaged thereon the milled thumbnut 1G adapted to be turned on the screw 13 to clampingly engage theplate 7 and draw the plate 5 against the other side of the blade 2 totightly secure the blade between said plates and prevent the slipping ofthe device on the square.

To facilitate the correct positioning of my device I form in the plate 7the longitudinally extending slot 17 which has a lower enlargement 1Sadapted to lie in alinement with the numerals 4, whereby as the deviceis moved along the blade 2, the grad uations 3 will appear in the slot17 to indicate the distance between the central axis of the point andthe entrant angle ot' the square, while the numerals denoting thevarious divisions such as inches or centimeters will appear in theenlargement 18 of the slot.

Formed in the plate is the socket 19 to receive tang 20 of the markingpoint 21, said point being in alinement with the cen ter of the slot 17,whereby as the square is moved over a piece of wood the gage point willform a scratch in the wood at the point indicated through the slot 17.

llVhile my attachment4 is particularly adapted for use upon try or otherwood working squares it may also be applied to T squares and when usedupon a T square I preferably remove the point 21 to prevent scratehing,the slot 17 having an enlarged upper end 22 and the plate 5 having theaperture 28 formed therein and when the device is in closed positioncoinciding with the enlargement 22 of the slot, said aperture andenlargement being of size and configuration to engage the point of apencil and permit the same to mark on the surface beneath the squarewhile preventing lateral slipping ot' the pencil point.

From the foregoing description taken in connection with the drawings,the construction of my improved device will be readily understood, andit will be seen that I have provided a simple and etlicient attachmentfor squares which may be readily applied to or removed from a square andwhich can be easily adjusted along the square to the correct point andthere secured to serve as either a scratching gage or as a pencilbearing and guiding gage.

I claim:

l. An attachment for squares, comprising a pair of plates pivoted toeach other at one end, means :tor clamping the free ends of the platestogether, and a removable gage pointI carried by one of the plates.

2. An attachment for squares con'iprising a pair of plates pivotallyconnected at one end, means for clamping the other end of the plates toeach other to engage the blade of a square therebetween, one of saidplates having a key-hole slot formed therein to coincide with one of thegraduations and indicating numerals of the square, and the device havinga socket formed therein to engage a marking member. 2 3. An attachmentfor squares, comprising a pair of plates pivotally connected at one end,means Carried by the other ends of said plates for securing the same inan adjusted position on the blade of a square, said 2 plates havingcoinciding apertures formed therein to engage a marking member.

In testimony whereof I affix my signature, in the presence of t-wowitnesses.

RALPH STONS NELSON BURDICK,

Witnesses:

M. A. GEORGE, F. K. ANDREWS.

Copies of this patent. may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington, 1D. C.

